Data accessing method, memory storage device and memory controlling circuit unit

摘要

A data accessing method, a memory storage device and a memory controlling circuit unit are provided. The data accessing method includes: determining whether a first physical programming unit storing first data belongs to a first type physical programming unit or a second type physical programming unit; if the first physical programming unit belongs to the first type physical programming unit, generating a first verification code corresponding to the first data and a second verification code for being combined with the first verification code, and writing the first data and the first verification code into the first physical programming unit; and if the first data is decoded unsuccessfully by using the first verification code, combining the second verification code and the first verification code to decode the first data.

主权项

1. A data accessing method for a rewritable non-volatile memory module, wherein the rewritable non-volatile memory module comprises a plurality of physical erasing units, wherein each of the physical erasing units comprises a plurality of physical programming units, and the data accessing method comprises:
determining whether a first physical programming unit configured to store first data among the physical programming units belongs to a first type physical programming unit or a second type physical programming unit; if the first physical programming unit belongs to the first type physical programming unit, generating a first verification code corresponding to the first data and a second verification code for being combined with the first verification code, and writing the first data and the first verification code into the first physical programming unit; and combining the second verification code and the first verification code to decode the first data if the first data is decoded unsuccessfully by using the first verification code.